2000 Porsche 911 Carrera 4 Cab AWD 996

The Carrera 4 (C4) version of Porsche's venerable 911 is-as you may be aware-an all-wheel-drive model commanding about a $7000 premium over the cost of the rear-wheel-drive 911. In this latest iteration of the 997 generation. the rear wheel arches are flared about 0. 9 inch to accommodate 295/35ZR-18 tires on the C4 and 305/30ZR-19 doughnuts on the 4S. You can spot a ridge alongside the taillight housings that is not present on rear-drive cars. Despite the more muscular haunches. the two models claim good aerodynamic performance. with drag coefficients of 0. 30 and 0. 29 for the C4 and C4S. respectively. Power to the axles is doled out by a multiple-plate viscous coupling that supplies between 5 and 40 percent of the available torque to the front end. depending on surface conditions. To fit the front-drive system. the front bulkhead of the body was moved forward and the fuel tank was redesigned to hang over the driveshaft at both sides. requiring a separate fuel pump for each chamber. The spare tire was ditched and the luggage compartment enlarged. A tire-repair kit is supplied instead.